AnsweredAssumed Answered

Channel Status RAW valid intermittent with Dolby TrueHD 7.1 on ADV7623

Question asked by JeremyM on Jun 5, 2014
Latest reply on Aug 15, 2014 by BrianP

When the input signal to the ADV7623 is 1080 24p with Dolby TrueHD 7.1, I have seen the Channel Status RAW fail to ever become valid (IO 0x65 bit7) - audio PLL locks, audio type is correctly identified as HBR, all video checks out OK, but CHST valid RAW never occurs.  When I hot plug the source (BluRay) there is about a 50-50 chance of this occurring.

 

When the CHST RAW Valid fails to get set to 1, I also see IO 0x7E bit1 and bit2 set to 1, indicating Packet error and Audio Packet errors.  So my question is this: is there anyway to force a reprocessing of the channel status bytes, or to re-initialize or reset the audio sub-system?  Is this a known problem with Dolby TrudHD 7.1?  I have not witnessed it with any other formats.

 

Thanks,

Jeremy

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